Exploiting semi-structured overlay networks in blockchain systems

Abstract

Blockchain systems are built on top of overlay networks. While typical blockchains are based on unstructured overlays, some other blockchains utilizes structured overlays to improve the inefficiency of information propagation in unstructured overlays. However, using structured overlays have security risks such as Eclipse Attack. In this paper, we propose a method for blockchain systems to exploit a semi-structured overlay with Flexible Routing Tables (FRT), so that we can obtain both communication efficiency and safety.